# good to know

- [Changelog](/good-to-know/changelog.md): Some public info about what we do for you
- [Branding](/good-to-know/branding.md)
- [Vulnerability Disclosure](/good-to-know/vulnerability-disclosure.md): Vulnerability disclosure guideline
- [National CTF](/good-to-know/national-ctf.md): This page is related to the National CTF of Ukraine and explains the level of difficulty for participants.